The Associated PressIgor Olshansky will move on to Dallas after five seasons in San Diego.

IRVING, Texas (AP) -- The Cowboys filled a large vacancy on their defensive line Friday by signing former San Diego Chargers defensive end Igor Olshansky.

The Ukraine-born Olshansky received a four-year deal worth $18 million with approximately $8 million guaranteed.

Like linebackers Keith Brooking and Matt Stewart, two other Cowboys additions this off-season, Olshansky (6-6, 309) has a history with coach Wade Phillips, who was his defensive coordinator for three seasons in San Diego.

With defensive tackle Chris Canty leaving via free agency for the New York Giants on a six-year, $42 million deal last week, the Cowboys acted quickly on Olshansky. He visited Thursday and signed Friday.

In 75 games with the Chargers, Olshansky, a second-round pick in 2004 out of Oregon, was credited by the coaches with 151 tackles and 11 sacks. In 64 games with the Cowboys, Canty had 197 tackles and 10 sacks

The Cowboys now have Olshansky, Marcus Spears, Jason Hatcher, Stephen Bowen (restricted free agent) and Marcus Dixon, who spent last season on the practice squad, at defensive end.